/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package LDAPManager;

import LDAPAPI.AnvilLDAP;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.forgerock.opendj.ldap.Attribute;
import org.forgerock.opendj.ldap.ByteString;
import org.forgerock.opendj.ldap.responses.SearchResultEntry;

/**
 *
 * @author anvil
 */
@WebServlet(name = "SearchEntry", urlPatterns = {"/SearchEntry"})
public class SearchEntry extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        try (PrintWriter out = response.getWriter()) {
            HttpSession session = request.getSession();

            AnvilLDAP ldap = (AnvilLDAP) session.getAttribute("ldap");

            if (ldap != null) {
                try {
                    JSONObject jsonObject = new JSONObject();
                    JSONArray jsonArray = new JSONArray();

                    String s = (String) request.getParameter("entryName");

                    if (s != null || !s.equals("")) {
                        SearchResultEntry e = ldap.getEntry(s);

                        Iterable<Attribute> allAttributes = e.getAllAttributes();
                        Iterator<Attribute> iterator = allAttributes.iterator();

                        while (iterator.hasNext()) {
                            Attribute next = iterator.next();
                            JSONObject subObject = new JSONObject();
                            JSONArray subArray = new JSONArray();

                            for (Iterator<ByteString> allValues = next.iterator(); allValues.hasNext();) {
                                subArray.add(allValues.next().toString());
                            }

                            subObject.element("name", next.getAttributeDescriptionAsString());
                            subObject.element("values", subArray);

                            jsonArray.add(subObject);
                        }

                        jsonObject.element("name", e.getName().toString());
                        jsonObject.element("attributes", jsonArray);

                        out.write(jsonObject.toString());
                    } else {
                        jsonObject.element("error", "Invalid Entry. Please refresh your entry list as one or more entry could have been deleted by another user.");
                        out.write(jsonObject.toString());
                    }
                } catch (Exception e) {
                    JSONObject jsonObject = new JSONObject();
                    jsonObject.element("error", "Parse Error. Please Refresh your page and login again.");
                    out.write(jsonObject.toString());
                }
            } else {
                JSONObject jsonObject = new JSONObject();
                jsonObject.element("error", "Invalid Session. Please log in again.");
                out.write(jsonObject.toString());
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
